package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {
    private static final String URL="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    UserMapper userMapper;

    @Autowired
    WeChatProperties weChatProperties;
    @Override
    public User login(UserLoginDTO userLoginDTO) {
        String openid = getOpenid(userLoginDTO.getCode());
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        User user =userMapper.getByOpenid(openid);
        if(user==null){
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.save(user);
        }
      return user;
    }


    public String getOpenid(String code){
        HashMap<String,String> map = new HashMap<>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String jsonStr = HttpClientUtil.doGet(URL, map);
        Map<String,String> map1 = (Map) JSON.parse(jsonStr);
        return map1.get("openid");
    }


}
